Recommendations for Short term property lets?

I need to move out of my flat temporarily and am looking for a short let (3 months, 1 bedroom, furnished, somewhere around SE1 preferably) asap but am struggling to find an estate agent that has anything appropriate.

Hi Chustler,
The Maltings, the old sarsons vinegar factory is all short lets now,(we have just moved out sadly) The letting agent is Sunlight the company who owns the site,I haven't got the number to hand but they will come up on google.